Why not take a break from the fire hose of Twitter and RSS and check out our weekly roundup of essential writing from around the web about technology, culture, media, and the future? Parmy Olson tells the story of WhatsApp and its founder Jan Koum. Forbes: Parmy Olson – The Rags-To-Riches Tale Of How Jan Koum Built WhatsApp Into Facebooks New $19 Billion Baby